23100220 has 96 divisors (see below), whose sum is σ = 58677696. Its totient is φ = 7526400.

The previous prime is 23100199. The next prime is 23100221. The reversal of 23100220 is 2200132.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 23100197 and 23100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117162 + ... + 117358.

It is an arithmetic number, because the mean of its divisors is an integer number (611226).

Almost surely, 2^23100220 is an apocalyptic number.

23100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29338848).

23100220 is an abundant number, since it is smaller than the sum of its proper divisors (35577476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23100220 is a wasteful number, since it uses less digits than its factorization.

23100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 23100220 is about 4806.2688231101. The cubic root of 23100220 is about 284.7991608516.

Adding to 23100220 its reverse (2200132), we get a palindrome (25300352).

The spelling of 23100220 in words is "twenty-three million, one hundred thousand, two hundred twenty".